您的客户有许多回头客，希望您能帮助他们覆盖那些未来能够带来更高转化收入的消费者。您会建议他们如何使用智能出价策略来实现该目标？

The correct answer is to advise the client to leverage historical purchase data and optimize for Lifetime Value (LTV). This strategy directly addresses the goal of targeting repeat customers who are likely to generate higher conversion revenue. By analyzing past purchasing behavior, the client can identify high-value customers and tailor bidding strategies to acquire and retain similar profiles, maximizing long-term profitability. Increasing prospecting efforts for new buyers (Option A) contradicts the focus on repeat customers. Smart Pay-Per-Click (Option B) is a bidding model, not a strategy for identifying high-value repeat customers. Adding smart creatives (Option C) enhances ad performance but doesn't inherently optimize for LTV or target repeat customers based on historical data.